Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Model for root CK biosynthesis effect on the functioning and aging of source leaves. Reducing source–sink ratio or overexpression of IPT under a root-specific promoter leads to altered CK biosynthesis in the roots. This change in root CK metabolism elicits root-to-shoot translocation of a signaling agent to promote alteration in CK biosynthesis in the leaves. Specific spatial and quantitative accumulation of CK results in delayed senescence of source leaves.
